tC needs new tires

[S204STi]

I think 215 is too wide actually for that car considering the power.  The Rx8 came with 225, my RSX came on 205s, My old Integra has 195s and upgraded to 205 on 16" .. 17s is probably too big for that car too honestly... would slow it down.

Yeah, that's a good point actually.

[Eye of the Tiger]

Yeah, except the tC is is a heavy, unbalanced FWD boat. It will naturally require more tire than an RX-8 to corner the same. Set up the suspension right, and that becomes less of an issue, be we're only talking tires here. Larger/heavier tires will slow transitions and all the jazz that unsprung weight affects, but should have greater static grip up to a point. A wider section width tire on the same wheel will, up to a point, increase the actual contact patch and overall grip, and will have the side effect of rounding the shoulder of the tread, making for smoother at-the-limit handling transitions. On the other hand, a narrower section width tire on the same wheel will feel sharper and give better feedback, but may not have as much overall grip, and may break away more suddenly. Every setup will change any number of factors in any number of different ways, but the bottom line is that two little 215 width tires are doing 90% of the work here. If we're talking about straight line acceleration, than you only have too much tire once you completely eliminate all wheel spin in a 1st-gear redlined clutch dump. That should require some rather large and squishy drag slicks. So, it all depends on the driver's performance requirements.

[2o6]

Yea, it is really hard for my car to change direction. I have to be bothered to remove my hands from doing other shit, put them on the wheel, and turn that like there's no tomorrow. It's like I am turning the fucking Titanic! It just keep going and going and going....


And don't even get me started on accelerating! God! I have to push a pedal! Ungh!

Now you sound like trep. Do you get tired from shifting?

[Cookie Monster]

Now you sound like trep. Do you get tired from shifting?

You obviously don't know what sarcasm is.

[2o6]

You obviously don't know what sarcasm is.

You also could not tell sarcasm from my post.

[Cookie Monster]

You also could not tell sarcasm from my post.

Go fap to Miley Cyrus pics.

[2o6]

Go fap to Miley Cyrus pics.

Jerk.

[Cookie Monster]

Jerk.

[Eye of the Tiger]

Jerk.

Jerk, fap... call it whatever you want. 

[2o6]

Wow, did I walk right into that one.

[Raza]

I've got 225s, and they can't keep my car stuck all that well.  I've got more power though.

[The Pirate]

Wait, really?  I thought he was joking. 

They are good tires.  A buddy of mine got them for his Impala (on my recommendation on Nick's recommendation), and while the car is still huge and relatively softly sprung they did make a pretty big difference in grip and cornering.

[Eye of the Tiger]

They are good tires.  A buddy of mine got them for his Impala (on my recommendation on Nick's recommendation), and while the car is still huge and relatively softly sprung they did make a pretty big difference in grip and cornering.

[Raza]

They are good tires.  A buddy of mine got them for his Impala (on my recommendation on Nick's recommendation), and while the car is still huge and relatively softly sprung they did make a pretty big difference in grip and cornering.

I guess I got lucky.  I didn't even choose them.  I failed inspection and had to get something.

[the Teuton]

Minpin, I have a set of 16" wheels that will fit your car perfectly.  I wouldn't downgrade if I were you, but the option is always there if you want.  Just find some old 16" Subaru wheels.

In any case, you'll never be in winter conditions, so whatever you do, don't get an M+S tire.

[MrH]

Frictional force is independent of surface area.

[Eye of the Tiger]

Frictional force is independent of surface area.

That's not how tires work.

[MrH]

That's not how tires work.

It doesn't describe tires exactly, but it's something people seem to be forgetting.  Width doesn't equal traction necessarily.

[Eye of the Tiger]

It doesn't describe tires exactly, but it's something people seem to be forgetting.  Width doesn't equal traction necessarily.

An elastic compound that deforms onto a hard, coarse, irregular surface can hardly be described by the laws of friction in the high-school physics kinda way.

[sportyaccordy]

This thread is awesome cause I am looking for the same exact size tires. I think I will find a set of very very very lightly used tires though. Much better bargain

[SVT_Power]

Frictional force is independent of surface area.

what's the equation for Ff again?

normal * coefficient of friction?

[rohan]

I've got 225s, and they can't keep my car stuck all that well.  I've got more power though.

Then you're not doing it right all our patrol cars have 225's on them and we rarely have performance related traction problems and I guarantee our cars are at least about 600 1,000 pounds heavier.

Here's a tire we run in the winter - I had it on the Cobra convertible I bought from hounddog they're very good on dry- very very good on wet- and excellent on snow/ice.  Tirerack reps told me when we started ordering them for winter that they're a winter tire disguised in a all-season.  I'll give you my personal word they are good tires- and that's with with experience with them as both professional and personal.  I got the Cobra caught in a snow storm that dumped about 8" of heavy wet slippery stuff and I filled the gas tank and took my time and I had no trouble.  On our patrol cars they're just plain great.
The survey is real close to where I'ld put the tire- only I'ld mark everythign a little higher but it's a pretty good description.  The tires are slightly noisy but it's not bad and they ride very well for a W rated tire.

http://www.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ContiExtremeContact&partnum=145WR7CEC&vehicleSearch=true&fromCompare1=yes

[S204STi]

Then you're not doing it right all our patrol cars have 225's on them and we rarely have performance related traction problems and I guarantee our cars are at least about 600 1,000 pounds heavier.

Here's a tire we run in the winter - I had it on the Cobra convertible I bought from hounddog they're very good on dry- very very good on wet- and excellent on snow/ice.  Tirerack reps told me when we started ordering them for winter that they're a winter tire disguised in a all-season.  I'll give you my personal word they are good tires- and that's with with experience with them as both professional and personal.  I got the Cobra caught in a snow storm that dumped about 8" of heavy wet slippery stuff and I filled the gas tank and took my time and I had no trouble.  On our patrol cars they're just plain great.
The survey is real close to where I'ld put the tire- only I'ld mark everythign a little higher but it's a pretty good description.  The tires are slightly noisy but it's not bad and they ride very well for a W rated tire.

http://www.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ContiExtremeContact&partnum=145WR7CEC&vehicleSearch=true&fromCompare1=yes

I've seen other LE agencies use these as well on occasion.  I had no idea they were that great... may have to use them on my WRX for winter duty when the Dunlop 3Ds wear out.

[rohan]

Tirerack surveys have 35million plus miles and still they score really high with all 7.5's and higher.  That's impressive.

[S204STi]

Tirerack surveys have 35million plus miles and still they score really high with all 7.5's and higher.  That's impressive.

Indeed!  Considering all the losers who have to bash everything in their surveys it's nice to see it still has nice numbers.  Thanks for the tip man.

[rohan]

Welcome.  Can't beat the price either.  We get them for about $70 for the squad cars under a bid plan but still the general price is good to.

[Raza]

Then you're not doing it right all our patrol cars have 225's on them and we rarely have performance related traction problems and I guarantee our cars are at least about 600 1,000 pounds heavier.

Here's a tire we run in the winter - I had it on the Cobra convertible I bought from hounddog they're very good on dry- very very good on wet- and excellent on snow/ice.  Tirerack reps told me when we started ordering them for winter that they're a winter tire disguised in a all-season.  I'll give you my personal word they are good tires- and that's with with experience with them as both professional and personal.  I got the Cobra caught in a snow storm that dumped about 8" of heavy wet slippery stuff and I filled the gas tank and took my time and I had no trouble.  On our patrol cars they're just plain great.
The survey is real close to where I'ld put the tire- only I'ld mark everythign a little higher but it's a pretty good description.  The tires are slightly noisy but it's not bad and they ride very well for a W rated tire.

http://www.tirerack.com/tires/tires.jsp?tireMake=Continental&tireModel=ContiExtremeContact&partnum=145WR7CEC&vehicleSearch=true&fromCompare1=yes

Well, your car and my car are not in any way comparable, and width isn't the only indicator of grip.  They're just shitty tires, and would be at 225, 215, 235, or 275.  You have a large, RWD automatic car with more weight and a limited slip differential (I think).  My Mercedes had 221bhp and not a single traction problem on 215s (some chirping now and then) or on the Pilots I put on afterwards (I forget the specific model).  I have a compact FWD car with a manual transmission and an open diff.  If I put my foot down in first, I'll spin, if I put my foot down in first or second in the wet, the wheels will spin.  Remember, FWD cars have inherently less traction than RWD cars.

I was considering ContiExtremeContacts (which are called Ultra High Performance tires, whereas the shitty HX MXM4s on my car are touring tires) to replace my tires when the time comes.  How do they do in the dry?  I care more about lateral dry grip than wet weather grip.

EDIT:  Those scores are impressive.  They might be my next set of rubber.

[rohan]

Only some of our cars are RWD the rest are impalas.  FWD cars should have more traction with the engine weight over the wheels- that's why they do better in foul weather in general.

They do really well in dry weather.  They're not dedicated summer performance good but they're an awesome blend of snow/wet/dry.  Like I said they're a little loud but it's livable the only problem with them is they're made in France.  But I guess that's a little btter than China. 

[Raza]

Only some of our cars are RWD the rest are impalas.  FWD cars should have more traction with the engine weight over the wheels- that's why they do better in foul weather in general.

They do really well in dry weather.  They're not dedicated summer performance good but they're an awesome blend of snow/wet/dry.  Like I said they're a little loud but it's livable the only problem with them is they're made in France.  But I guess that's a little btter than China. 

I'm pretty sure that FWD have inherently worse traction than RWD cars, and are favored for foul weather because they bias to understeer in low traction situations whereas RWD cars bias to oversteer, which is considered less recoverable than understeer.  My friend's 140hp 91 Buick Regal could get wheelspin at a time my 221hp Mercedes could not under the same conditions.  Anyone should feel free to correct me if I'm wrong or affirm if I am right. 

[TBR]

I'm pretty sure that FWD have inherently worse traction than RWD cars, and are favored for foul weather because they bias to understeer in low traction situations whereas RWD cars bias to oversteer, which is considered less recoverable than understeer.  My friend's 140hp 91 Buick Regal could get wheelspin at a time my 221hp Mercedes could not under the same conditions.  Anyone should feel free to correct me if I'm wrong or affirm if I am right. 

Pretty sure you're making that up.

Remember MB traction control never turns off, perhaps that was the reason?